15797860788780 has 360 divisors, whose sum is σ = 57888934177536. Its totient is φ = 3595952102400.

The previous prime is 15797860788737. The next prime is 15797860788791. The reversal of 15797860788780 is 8788706879751.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 15797860788780.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 18717685 + ... + 19543475.

Almost surely, 2^{15797860788780} is an apocalyptic number.

15797860788780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15797860788780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28944467088768).

15797860788780 is an abundant number, since it is smaller than the sum of its proper divisors (42091073388756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15797860788780 is a wasteful number, since it uses less digits than its factorization.

15797860788780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826067 (or 826049 counting only the distinct ones).

The product of its (nonzero) digits is 2655313920, while the sum is 81.

The spelling of 15797860788780 in words is "fifteen trillion, seven hundred ninety-seven billion, eight hundred sixty million, seven hundred eighty-eight thousand, seven hundred eighty".